Revenue Recognition - Summary of Disaggregation of Revenue by Product Platform/Type (Detail) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Segment Reporting Information [Line Items]
Revenue	$ 333,018	$ 317,896	$ 253,667
Diagnostics [Member]
Segment Reporting Information [Line Items]
Revenue	155,903	127,760	121,132
Diagnostics [Member] | Molecular Assays [Member]
Segment Reporting Information [Line Items]
Revenue	18,177	19,037	21,907
Diagnostics [Member] | Non-molecular assays
Segment Reporting Information [Line Items]
Revenue	137,726	108,723	99,225
Life Science [Member]
Segment Reporting Information [Line Items]
Revenue	177,115	190,136	132,535
Life Science [Member] | Molecular Reagents [Member]
Segment Reporting Information [Line Items]
Revenue	91,816	130,537	78,431
Life Science [Member] | Immunological Reagents [Member]
Segment Reporting Information [Line Items]
Revenue	$ 85,299	$ 59,599	$ 54,104